| Monthly Observation SummaryJuly 1998 | |||||||||||||
| Station "APLMD" (JHU/Applied Physics Laboratory), Laurel, MD (39°10'02"N, 76°53'52"W, 438 ft) | |||||||||||||
| Day | Max. Temp. | Min. Temp. | Rain Day | Rain Month | Rain Year | Max. Rn Rate | Peak Gust | Max. Light | Last Light | Min. Press. | Max. Press. | Min. RH | Max. RH |
| (°F) | (°F) | (in.) | (in.) | (in.) | (in./hr) | (mph) | (in.) | (in.) | (%) | (%) | |||
| 1 | 84 | 63 | 0.00 | 0.00 | 30.17 | 0.00 | 25 | 80 | 20:57 | 29.63 | 29.95 | 38 | 90 |
| 2 | 86 | 62 | 0.00 | 0.00 | 30.17 | 0.00 | 13 | 80 | 20:57 | 29.91 | 30.10 | 41 | 77 |
| 3 | 88 | 59 | 0.00 | 0.00 | 30.17 | 0.00 | 11 | 80 | 20:54 | 30.04 | 30.16 | 31 | 87 |
| 4 | 89 | 66 | 0.00 | 0.00 | 30.17 | 0.00 | 13 | 76 | 20:53 | 29.90 | 30.07 | 43 | 96 |
| 5 | 82 | 66 | 0.00 | 0.00 | 30.17 | 0.00 | 19 | 80 | 20:56 | 29.91 | 30.12 | 43 | 88 |
| 6 | 86 | 60 | 0.00 | 0.00 | 30.17 | 0.00 | 14 | 78 | 20:56 | 30.12 | 30.20 | 37 | 89 |
| 7 | 85 | 62 | 0.00 | 0.00 | 30.17 | 0.00 | 18 | 76 | 20:53 | 30.02 | 30.16 | 48 | 100 |
| 8 | 72 | 62 | 0.86 | 0.86 | 31.03 | 0.76 | 14 | 57 | 20:48 | 29.87 | 30.07 | 75 | 100 |
| 9 | 85 | 63 | 0.00 | 0.86 | 31.03 | 0.00 | 11 | 78 | 20:55 | 29.87 | 30.01 | 48 | 100 |
| 10 | 86 | 67 | 0.00 | 0.86 | 31.03 | 0.00 | 20 | 78 | 20:54 | 29.87 | 30.01 | 41 | 94 |
| 11 | 81 | 60 | 0.00 | 0.86 | 31.03 | 0.00 | 16 | 80 | 20:53 | 29.99 | 30.09 | 34 | 85 |
| 12 | 85 | 59 | 0.00 | 0.86 | 31.03 | 0.00 | 13 | 80 | 20:52 | 30.02 | 30.10 | 31 | 93 |
| 13 | 88 | 59 | 0.00 | 0.86 | 31.03 | 0.00 | 16 | 78 | 20:51 | 30.02 | 30.13 | 46 | 100 |
| 14 | 88 | 64 | 0.00 | 0.86 | 31.03 | 0.00 | 21 | 78 | 20:48 | 30.05 | 30.15 | 45 | 96 |
| 15 | 86 | 69 | 0.00 | 0.86 | 31.03 | 0.00 | 9 | 77 | 20:50 | 30.05 | 30.15 | 54 | 97 |
| 16 | 93 | 69 | 0.00 | 0.86 | 31.03 | 0.00 | 11 | 80 | 20:48 | 29.91 | 30.07 | 43 | 99 |
| 17 | 90 | 72 | 0.00 | 0.86 | 31.03 | 0.00 | 20 | 79 | 20:50 | 29.82 | 29.93 | 49 | 96 |
| 18 | 87 | 66 | 0.00 | 0.86 | 31.03 | 0.00 | 17 | 78 | 20:50 | 29.90 | 30.05 | 29 | 83 |
| 19 | 90 | 65 | 0.00 | 0.86 | 31.03 | 0.00 | 21 | 79 | 20:46 | 29.99 | 30.10 | 43 | 96 |
| 20 | 90 | 72 | 0.00 | 0.86 | 31.03 | 0.00 | 21 | 78 | 20:48 | 29.95 | 30.05 | 45 | 100 |
| 21 | 96 | 71 | 0.02 | 0.88 | 31.05 | 0.04 | 29 | 80 | 20:45 | 29.99 | 30.12 | 39 | 91 |
| 22 | 96 | 75 | 0.00 | 0.88 | 31.05 | 0.00 | 21 | 79 | 20:44 | 29.96 | 30.07 | 26 | 62 |
| 23 | 92 | 74 | 0.01 | 0.89 | 31.06 | 0.04 | 23 | 80 | 20:44 | 29.85 | 29.98 | 45 | 87 |
| 24 | 88 | 69 | 0.00 | 0.89 | 31.06 | 0.00 | 24 | 79 | 20:45 | 29.91 | 30.09 | 34 | 87 |
| 25 | 88 | 69 | 0.00 | 0.89 | 31.06 | 0.00 | 14 | 79 | 20:41 | 30.07 | 30.20 | 30 | 76 |
| 26 | 83 | 68 | 0.01 | 0.90 | 31.07 | 0.04 | 13 | 78 | 20:44 | 30.09 | 30.16 | 45 | 92 |
| 27 | 88 | 62 | 0.00 | 0.90 | 31.07 | 0.00 | 23 | 78 | 20:41 | 29.99 | 30.15 | 37 | 97 |
| 28 | 92 | 66 | 0.00 | 0.90 | 31.07 | 0.00 | 11 | 78 | 20:42 | 29.93 | 30.04 | 35 | 96 |
| 29 | 92 | 72 | 0.00 | 0.90 | 31.07 | 0.00 | 16 | 77 | 20:38 | 29.90 | 29.96 | 37 | 92 |
| 30 | 94 | 70 | 0.29 | 1.19 | 31.36 | 1.20 | 24 | 76 | 20:33 | 29.91 | 30.05 | 37 | 95 |
| 31 | 82 | 66 | 0.20 | 1.39 | 31.56 | 0.16 | 20 | 77 | 20:39 | 29.93 | 30.21 | 49 | 98 |
| Avg. | 87.5 | 66.0 | |||||||||||
| Max. | 96 | 0.86 | 1.20 | 29 | 80 | 30.21 | 75 | 100 | |||||
| Min. | 59 | 9 | 57 | 29.63 | 26 | 62 | |||||||